package com.gg.customer;
class A{

}
class B{

}

public class TestDemo {
    public static void main(String[] args){
        System.out.println("hhh!1");
        System.out.print("hhh!2\n");
        System.out.println("h"+"hh!3");
        System.out.println("hello!");
    }

}
